#include<iostream>
#include<string>
#include<vector>
#include<map>
#include<algorithm>
#include<set>
#include<unordered_map>
#include<unordered_set>
#include<queue>
#include<stack>



class Solution
{
    public:
    int find_max(std::vector<int>& nums)
    {

    }
};
